Apply Addition & Subtraction
Single-Digit Facts Review
Fill in the missing number. Be quick!
More Single-Digit Facts
Fill in the missing number.
Subtraction Facts
Fill in the missing number.
Link Small Facts to Big Problems
Match each small fact to the related big problem.
More Fact Connections
Match each small fact to the related big problem.
Use the Fact to Solve
Use the small fact to help.
If 6 + 7 = 13, then 60 + 70 = ?
If 8 + 5 = 13, then 80 + 50 = ?
If 9 − 4 = 5, then 90 − 40 = ?
If 15 − 8 = 7, then 150 − 80 = ?
More Fact Extensions
Use the small fact to help.
If 3 + 5 = 8, then 30 + 50 = ?
If 7 + 4 = 11, then 70 + 40 = ?
If 12 − 5 = 7, then 120 − 50 = ?
If 14 − 6 = 8, then 140 − 60 = ?
Even More Extensions
Circle the answer.
If 5 + 9 = 14, then 50 + 90 = ?
If 4 + 8 = 12, then 40 + 80 = ?
If 16 − 7 = 9, then 160 − 70 = ?
If 11 − 3 = 8, then 110 − 30 = ?
Write the Related Facts
Write the tens fact for each single-digit fact.
5 + 8 = 13, so 50 + 80 = ___
7 + 6 = 13, so 70 + 60 = ___
9 − 3 = 6, so 90 − 30 = ___
16 − 9 = 7, so 160 − 90 = ___
Write More Related Facts
Write the tens fact.
4 + 7 = 11, so 40 + 70 = ___
8 + 6 = 14, so 80 + 60 = ___
13 − 7 = 6, so 130 − 70 = ___
18 − 9 = 9, so 180 − 90 = ___
Tens Addition Patterns
Fill in the missing numbers.
Tens Subtraction Patterns
Fill in the missing numbers.
Extend to Hundreds
Use the fact to fill in the missing number.
More Hundreds Extensions
Fill in the missing number.
Tens Addition
Circle the correct answer.
60 + 80 = ?
70 + 50 = ?
90 + 40 = ?
80 + 70 = ?
Tens Subtraction
Circle the correct answer.
150 − 80 = ?
130 − 50 = ?
160 − 90 = ?
120 − 40 = ?
Show the Connection
Write the small fact and the big fact.
8 + 5 = ___, so 280 + 50 = ___
7 + 6 = ___, so 170 + 60 = ___
9 + 4 = ___, so 390 + 40 = ___
15 − 8 = ___, so 350 − 80 = ___
More Connections
Write the small fact and the big fact.
6 + 9 = ___, so 460 + 90 = ___
5 + 7 = ___, so 250 + 70 = ___
13 − 6 = ___, so 530 − 60 = ___
17 − 9 = ___, so 670 − 90 = ___
Match Extended Facts
Match each fact to its extended version.
Bridge to Three Digits
Use your facts to find the missing number.
Add Tens to Three-Digit Numbers
Circle the answer.
230 + 40 = ?
450 + 80 = ?
670 + 60 = ?
380 + 50 = ?
Subtract Tens from Three-Digit Numbers
Circle the answer.
340 − 70 = ?
520 − 40 = ?
610 − 50 = ?
830 − 90 = ?
Sort: Addition or Subtraction Fact?
Sort each problem.
Solve Three-Digit Problems
Use your single-digit facts to help.
345 + 30 = ?
572 + 8 = ?
486 − 60 = ?
731 − 9 = ?
More Three-Digit Problems
Circle the answer.
258 + 40 = ?
463 + 7 = ?
694 − 80 = ?
537 − 5 = ?
Challenge Three-Digit Problems
Circle the answer.
178 + 60 = ?
395 + 9 = ?
821 − 50 = ?
456 − 8 = ?
Solve and Explain
Solve each problem. Write which small fact helped you.
267 + 50 = ___ (I used: ___ + ___ = ___)
483 − 70 = ___ (I used: ___ − ___ = ___)
156 + 200 = ___ (I used: ___ + ___ = ___)
More Explain Your Thinking
Solve and explain.
374 + 60 = ___ (I used: ___)
852 − 30 = ___ (I used: ___)
619 + 8 = ___ (I used: ___)
Word Problems
Solve each word problem.
Sam had 345 stickers. He got 50 more. How many now?
A library had 682 books. 70 were returned. How many left?
Ella ran 456 metres then another 30 metres. How far?
True or False
Circle True or False.
If 6 + 8 = 14, then 360 + 80 = 440
If 9 − 5 = 4, then 490 − 50 = 440
If 7 + 7 = 14, then 270 + 70 = 350
If 13 − 6 = 7, then 830 − 60 = 770
Create Your Own Problems
Write your own problems using facts you know.
My small fact: ___ + ___ = ___ My big problem: ___ + ___ = ___
My small fact: ___ − ___ = ___ My big problem: ___ − ___ = ___
Home Activity: Fact Connections
Practise connecting small facts to big problems!
- 1Write 5 single-digit addition facts. Now make each one into a tens fact (e.g. 6 + 7 becomes 60 + 70).
- 2Pick a three-digit number and add a multiple of 10. What small fact helped?
- 3Play mental maths: ask a family member to give you a two-digit + one-digit problem.
- 4Can you use 8 + 5 = 13 to work out 380 + 50?
Fact Review — Sums to 20
Fill in the missing number as fast as you can.
Subtraction Facts — Quick Fire
Fill in the missing number.
Tens Addition Chain
Fill in the missing totals.
Tens Subtraction Chain
Fill in the missing numbers.
Match Facts to Extensions — Set A
Match each small fact to its extension.
Match Facts to Extensions — Set B
Match each fact to its two-step extension.
Hundreds Addition
Circle the correct answer.
200 + 400 = ?
300 + 500 = ?
600 + 300 = ?
400 + 600 = ?
Hundreds Subtraction
Circle the correct answer.
800 − 300 = ?
700 − 200 = ?
900 − 600 = ?
1000 − 400 = ?
Three-Digit + Ones (Bridging)
Circle the correct answer.
327 + 6 = ?
465 + 8 = ?
589 + 4 = ?
748 + 7 = ?
Three-Digit − Ones (Bridging)
Circle the correct answer.
403 − 6 = ?
502 − 4 = ?
301 − 5 = ?
700 − 3 = ?
Fact Extension — Set A
Use the small fact to write the extended fact.
3 + 9 = 12, so 30 + 90 = ___
7 + 5 = 12, so 70 + 50 = ___
8 + 4 = 12, so 80 + 40 = ___
6 + 6 = 12, so 600 + 600 = ___
Fact Extension — Set B
Write the two-digit and three-digit versions of each fact.
4 + 8 = 12 Tens: 40 + 80 = ___ Hundreds: 400 + 800 = ___
9 + 6 = 15 Tens: 90 + 60 = ___ Hundreds: 900 + 600 = ___
Mental Maths — Bridging Tens
Solve by bridging through a multiple of 10.
47 + 6 = ? (Tip: 47 + 3 = 50, then + 3 more = ___)
58 + 7 = ? (Tip: bridge through 60)
73 + 9 = ? (Tip: bridge through 80)
86 + 8 = ? (Tip: bridge through 90)
Bridging Subtraction
Solve by bridging.
52 − 6 = ? (Tip: 52 − 2 = 50, then − 4 more = ___)
63 − 7 = ? (Tip: bridge through 60)
84 − 9 = ? (Tip: bridge through 80)
71 − 5 = ? (Tip: bridge through 70)
Challenge: Three-Digit Mental Maths
Use your facts to solve mentally.
523 + 50 = ___
741 − 30 = ___
856 + 7 = ___
394 − 9 = ___
Word Problems — Set C
Solve each problem.
There are 465 students. 80 go home early. How many remain? ___
A farmer grows 730 pumpkins. He picks 60. How many left? ___
A school library has 548 books. 40 are borrowed. How many remain? ___
Word Problems — Set D
Solve each problem.
Lily saves $245 in January and $90 more in February. How much has she saved? ___
A shop has 682 items. They receive 70 more. How many now? ___
A paddock has 374 sheep. 30 are moved. How many remain? ___
Sort: Add or Subtract?
Sort each problem type.
Match Problems to Answers — Set A
Match each problem to its answer.
Match Problems to Answers — Set B
Match.
Mixed Fact Practice — Set A
Circle the correct answer.
50 + 60 = ?
80 − 30 = ?
70 + 90 = ?
120 − 40 = ?
Mixed Fact Practice — Set B
Circle the correct answer.
200 + 700 = ?
600 − 400 = ?
500 + 300 = ?
1000 − 700 = ?
Ten Frames: Show the Sum
How many are filled in total across both frames?
Addition Pattern
Each row shows a pattern. What comes next?
Mental Maths Score Tracker
Count the tallies to see each student's score.
| Item | Tally | Total |
|---|---|---|
Ana | ||
Ben | ||
Cam | ||
Dee |
Addition Strategies Pictograph
Which strategy did students use most?
| Count on | |
| Use a fact | |
| Partition | |
| Jump strategy |
Which strategy was used most?
How many more students used 'Use a fact' than 'Count on'?
How many students were surveyed?
Explain Your Strategy
Solve each problem and explain which fact you used.
435 + 60 = ___ Strategy: ___
580 − 90 = ___ Strategy: ___
723 + 8 = ___ Strategy: ___
Create Your Own Fact Extension
Start with a single-digit fact and extend it.
My fact: ___ + ___ = ___ Tens: ___ + ___ = ___ Hundreds: ___ + ___ = ___
My subtraction fact: ___ − ___ = ___ Tens: ___ − ___ = ___ Hundreds: ___ − ___ = ___
Single-Digit Fluency — Set C
Fill in the missing number as fast as you can.
Multiples of 100 Sequence
Fill in the missing numbers.
Add Hundreds to Three-Digit Numbers
Circle the correct answer.
345 + 200 = ?
627 + 300 = ?
181 + 400 = ?
459 + 500 = ?
Subtract Hundreds from Three-Digit Numbers
Circle the correct answer.
745 − 300 = ?
983 − 400 = ?
630 − 200 = ?
821 − 500 = ?
Mental Maths Race
Solve as quickly as you can.
400 + 300 = ___ 700 + 200 = ___ 500 + 400 = ___
900 − 400 = ___ 700 − 300 = ___ 600 − 200 = ___
Addition and Subtraction Together
Solve each mixed problem.
240 + 60 − 50 = ___
500 − 200 + 80 = ___
360 + 90 − 30 = ___
720 − 50 + 40 = ___
Match Facts to Story Problems
Match each story to the correct number sentence.
Home Activity: Mental Maths Daily
Do 5 minutes of mental maths every day!
- 1Ask a family member to give you 5 add/subtract problems using multiples of 10.
- 2Challenge yourself: how many facts can you answer in 1 minute?
- 3Make flash cards with facts. Test yourself each day.
- 4Try bridging to the next 10: 47 + 6 → bridge through 50.
Addition Facts to 20 — Set A
Fill in the missing number.
Subtraction from 100
Fill in the missing number.
Jump Strategy — Sequence
Jump by the given amount. Fill in the missing numbers.
Subtract by Jumping Back
Jump back by the amount shown.
Bridging Through 10
Use bridging to solve.
8 + 5 = ? (bridge through 10: 8 + 2 + 3)
7 + 6 = ? (bridge through 10)
9 + 4 = ? (bridge through 10)
6 + 8 = ? (bridge through 10)
Bridging Through 100
Bridge through 100 to solve.
96 + 7 = ?
98 + 5 = ?
97 + 8 = ?
99 + 6 = ?
Match Subtraction to Addition Inverse
Match each subtraction to its related addition.
Match Word Problems to Number Sentences
Match.
Sort: Addition or Subtraction?
Sort each number sentence.
Sort: Correct or Incorrect?
Sort each calculation.
Count to Check an Addition
Each star = 10. Count and check: does 8 rows of 10 = 80?
Count Sets of 5
Each heart = 5. Write the total for each row.
Fact Families — Set A
Write all 4 facts in the fact family.
6, 7, 13: ___ + ___ = ___ ___ + ___ = ___ ___ − ___ = ___ ___ − ___ = ___
8, 9, 17: ___ + ___ = ___ ___ + ___ = ___ ___ − ___ = ___ ___ − ___ = ___
Fact Families — Set B
Write all 4 facts.
5, 8, 13: ___, ___, ___, ___
40, 70, 110: ___, ___, ___, ___
300, 500, 800: ___, ___, ___, ___
Check Using the Inverse
Use the inverse operation to check each answer.
345 + 220 = 565. Check: 565 − 220 = ___
780 − 250 = 530. Check: 530 + 250 = ___
467 + 80 = 547. Check: 547 − 80 = ___
920 − 60 = 860. Check: 860 + 60 = ___
Mental Addition — 2-Digit Numbers
Solve mentally.
34 + 27 = ___
56 + 38 = ___
73 + 19 = ___
45 + 47 = ___
Mental Subtraction — 2-Digit Numbers
Solve mentally.
72 − 28 = ___
85 − 37 = ___
64 − 26 = ___
91 − 43 = ___
Word Problem Sprint
Solve each problem quickly.
A jar has 76 lollies. 28 are eaten. How many left? ___
Mia read 48 pages then 35 more. Total pages: ___
There are 93 students. 37 go on excursion. How many stay? ___
Story Problem — Create Your Own
Write and solve your own addition and subtraction word problems.
My addition problem: ___ Number sentence: ___ Answer: ___
My subtraction problem: ___ Number sentence: ___ Answer: ___
Estimate Then Solve
First estimate, then circle the closest answer.
67 + 34 ≈ ? (estimate first)
82 − 39 ≈ ?
125 + 48 ≈ ?
213 − 58 ≈ ?
Addition and Subtraction Test Results
Record these scores.
| Item | Tally | Total |
|---|---|---|
10/10 | ||
8-9/10 | ||
6-7/10 | ||
Under 6 |
Errors in Mental Maths
This graph shows which operation type had the most errors.
| Addition | |
| Subtraction | |
| Bridging 10 | |
| Inverse |
Which operation had the most errors?
How many errors were there in addition and subtraction combined?
What might help reduce errors in subtraction?
Hardest Problem I Can Solve
Write the hardest addition and subtraction problem you can solve mentally.
My hardest addition: ___ + ___ = ___ How I solved it: ___
My hardest subtraction: ___ − ___ = ___ How I solved it: ___
Home Activity: Fact Family Cards
Make fact family cards with a family member!
- 1Write three numbers on a card (e.g. 7, 8, 15). Write all 4 related facts.
- 2Shuffle your cards and quiz each other.
- 3Use bigger numbers: try 30, 70, 100 as a fact family.
- 4Play 'missing number': cover one number in a sentence and guess it.
Choose the Operation
Circle Add or Subtract to solve each problem.
Lily has 56 stickers. She gives away 23. How many left?
Ben scores 78 then earns 14 more. Total score?
345 books in library. 127 checked out. Remaining?
423 cm + 58 cm = ?
Addition Chains
Keep adding to complete each chain.
Fact Family Bonds — Larger Numbers
Complete the fact family bonds.
Match: Problem to Answer
Match each word problem to its answer.
Three-Number Addition
Add three numbers together using partitioning.
24 + 35 + 16 = ___ Strategy used: ___
142 + 58 + 37 = ___ Strategy: ___
Explain why adding in any order gives the same answer:
Change-Unknown Word Problems
Write the equation and solve.
Ava had some cards. She got 34 more and now has 91. How many did she start with?
Tom baked 120 biscuits. He gave some away and has 73 left. How many did he give?
Sort: Sum Greater or Less Than 200?
Work out each sum and sort into the correct column.
Count Grouped Tens for Addition
Count the groups of 10 and ones to find each total.
Add Using Ten Frames
How many dots are shown across both frames?
Mental Maths Champion
Solve these without writing working out.
199 + 56 = ___ Trick: add 200 then subtract 1
501 − 99 = ___ Trick: subtract 100 then add 1
Make up your own near-hundred trick problem:
Home Activity: Addition and Subtraction Games
Play add and subtract games with your family!
- 1Deal two playing cards each. Add the numbers. Highest total wins.
- 2Take turns rolling two dice. Subtract the smaller from the larger. Who gets to zero first?
- 3Pick two prices from a catalogue. Add them together. Can you stay under a budget?
- 4Play 'closest to 100': each person picks two numbers to add. Whose sum is nearest 100?
Choose the Best Strategy
Circle the best mental strategy for each calculation.
297 + 145
500 − 248
136 + 299
Addition Patterns
Complete each addition sequence.
Near-Doubles
Use near-doubles to find each sum.
Inverse Operations Check
Use inverse operations to check each answer.
347 + 185 = 532. Check: 532 − 185 = ___. Correct? ___
624 − 298 = 326. Check: 326 + 298 = ___. Correct? ___
Explain why inverse operations help you check your work:
Sort: Mental or Written Method?
Sort each calculation by the best method.
Home Activity: Maths in the News
Find addition and subtraction in the news!
- 1Find a news article with numbers. Write 3 addition or subtraction problems from the data.
- 2Sports scores: add team scores to find the total points scored.
- 3Find the difference between two statistics in a news item.
- 4Write a word problem using data from the news and solve it.